CN216976822U

CN216976822U - Large-size air preheater mounting structure

Info

Publication number: CN216976822U
Application number: CN202122121268.9U
Authority: CN
Inventors: 时标; 张宪岭; 颜刚; 梁学东; 张允洲; 葛宗琴; 王诚斌; 崔玉岭
Original assignee: Huaneng Nanjing Jinling Power Generation Co Ltd
Current assignee: Huaneng Nanjing Jinling Power Generation Co Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-07-15
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a large-size air preheater mounting structure, which comprises a preheater, wherein mounting pipes are arranged on two sides of the preheater, connecting pipes are arranged on the side walls of the mounting pipes, bolts are arranged on the connecting pipes, nuts are fixedly arranged on the tops of the bolts, the bottoms of the bolts extend to the bottoms of the mounting pipes, and nuts are arranged on the side walls of the bottoms of the mounting pipes by screw threads, in the utility model, the connecting pipes and the mounting pipes can be fixedly connected by screwing the bolts through the connecting pipes and the mounting pipes and the nuts, meanwhile, in the screwing process of the bolts, a fixing plate can support the side walls of the bolts under the elastic effect of a torsion spring to ensure that the bolts cannot be loosened after being screwed, when the disassembly is required to be released, the fixing plate is opened to unscrew the bolts and the nuts, so that equipment is prevented from loosening in the long-term use process, the joint is affected, the stability of the device is effectively guaranteed, and the practicability of the device is stronger.

Description

Large-size air preheater mounting structure

Technical Field

The utility model relates to the technical field of air preheaters, in particular to a large-size air preheater mounting structure.

Background

The air preheater is a heating surface for preheating air before entering a boiler to a certain temperature by smoke in a flue at the tail part of the boiler through internal radiating fins, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption; the method is mainly used for coal-fired power plant boilers, and can be divided into a pipe box type boiler and a rotary type boiler, wherein the rotary type boiler is divided into a fan cover rotary type boiler and a heating surface rotary type boiler, the heating surface rotary type preheater is more commonly adopted in the power plant boilers, the two-section type boiler, the three-section type boiler and the four-section type boiler are commonly applied in the boilers, and the four-section type boiler is more commonly used in circulating fluidized bed boilers.

Traditional air heater need guarantee the leakproofness of erection joint at the in-process of installation, if the leakproofness is not good, will cause very big influence to work flow and safety, and the sealing efficiency of current sealing method is not high, may produce certain leakage after using for a long time, is unfavorable for the work to use, for this reason we propose a jumbo size air heater mounting structure, solve above problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a large-size air preheater mounting structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a jumbo size air heater mounting structure, includes the pre-heater, the both sides of pre-heater are provided with the installation pipe, be provided with the connecting pipe on the lateral wall of installation pipe, be provided with the bolt on the connecting pipe, the fixed nut that is provided with in top of bolt, the bottom of bolt extends to the bottom of installation pipe, the bolt is located the lateral wall of installation socle portion and is provided with the nut in the screw thread, be provided with fixed establishment on the nut, the seal groove has been seted up at the top of installation pipe, be provided with sealing device on the inside wall of seal groove, the end fixing of connecting pipe is provided with sealed piece, sealed piece is located the inside of seal groove.

Preferably, the fixing mechanism comprises a rotating rod movably arranged at the bottom of the nut, a fixing plate is fixedly arranged on the outer side wall of the rotating rod, a torsion spring is arranged on the outer side wall of the rotating rod, one side of the torsion spring is fixedly connected with the nut, the other end of the torsion spring is tightly abutted against the fixing plate, and the end part of the fixing plate is tightly abutted against the side wall of the bolt.

Preferably, sealing device is including seting up the extrusion groove on the installation pipe inside wall, be linked together between extrusion groove and the seal groove, the activity is provided with the extrusion piece on the inside wall in extrusion groove, the fixed push rod that is provided with on the lateral wall of extrusion piece, the end fixing of push rod is provided with the ejector pad, the tip of ejector pad with the lateral wall counterbalance of bolt is tight.

Preferably, be provided with sealed the pad on the inside wall of seal groove, the fixed gasbag that is provided with on the inside wall of sealed pad, the lateral wall of sealed piece with it is tight to offset between the lateral wall of gasbag.

Preferably, the inner diameter of the nut is larger than the outer diameter of the bolt, and the thread on the inner side wall of the nut is matched with the thread on the outer side wall of the bolt.

Preferably, the tail part of the extrusion block is abutted against the side wall of the sealing gasket.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the connecting pipe and the mounting pipe can be fixedly connected by screwing the bolt through the connecting pipe and the mounting pipe and the nut, meanwhile, in the screwing process of the bolt, the fixing plate can support the side wall of the bolt tightly under the elastic effect of the torsion spring, so that the bolt cannot be loosened after being screwed, when the bolt needs to be disassembled and removed, the fixing plate is opened, the bolt and the nut can be unscrewed, the phenomenon that equipment is loosened in the long-term use process and influences the connection position is avoided, the stability of the device is effectively ensured, and the practicability of the device is stronger.

2. According to the utility model, when the bolt enters the connecting part of the installation pipe, the push block is extruded towards the inner side, when the push block moves towards the inner side, the push rod moves towards the inner side, and then the push rod pushes the extrusion block towards the inner side, so that the extrusion block extrudes the air bag in the sealing groove, the air bag expands, meanwhile, the sealing block enters the sealing groove, the sealing block fully extrudes the air bag towards the inner side, and then the air bag tightly supports the sealing gasket against the side wall of the sealing groove, so that the sealing effect is better, the pipeline leakage is avoided, the adverse effect on the use effect of equipment is caused, and the stability performance of the equipment is effectively improved.

Drawings

FIG. 1 is a schematic structural view of a large-sized air preheater mounting structure according to the present invention;

FIG. 2 is a sectional view showing a structure of a large-sized air preheater mounting structure according to the present invention;

FIG. 3 is an enlarged view of a large-sized air preheater mounting structure A according to the present invention;

FIG. 4 is an enlarged view of a large-sized air preheater mounting structure B according to the present invention.

In the figure: 1. a preheater; 2. installing a pipe; 3. a connecting pipe; 4. a nut; 5. a bolt; 6. a nut; 7. a rotating rod; 8. a fixing plate; 9. a torsion spring; 10. extruding a groove; 11. extruding the block; 12. a push rod; 13. a push block; 14. a sealing groove; 15. an air bag; 16. a gasket; 17. and (6) sealing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a large-sized air preheater mounting structure comprises a preheater 1, mounting pipes 2 are arranged on two sides of the preheater 1, a connecting pipe 3 is arranged on a side wall of each mounting pipe 2, a bolt 5 is arranged on each connecting pipe 3, a nut 4 is fixedly arranged on the top of each bolt 5, the bottom of each bolt 5 extends to the bottom of each mounting pipe 2, a nut 6 is arranged on a side wall of each bolt 5 at the bottom of each mounting pipe 2 in a threaded manner, the inner diameter of each nut 6 is larger than the outer diameter of each bolt 5, threads on the inner side wall of each nut 6 are matched with threads on the outer side wall of each bolt 5, a fixing mechanism is arranged on each nut 6 and comprises a rotating rod 7 movably arranged at the bottom of each nut 6, a fixing plate 8 is fixedly arranged on the outer side wall of each rotating rod 7, a torsion spring 9 is arranged on the outer side wall of each rotating rod 7, and one side of each torsion spring 9 is fixedly connected with each nut 6, the other end of the torsion spring 9 is tightly propped against the fixed plate 8, and the end part of the fixed plate 8 is tightly propped against the side wall of the bolt 5;

the connecting pipe 3 and the mounting pipe 2 can be fixedly connected by the bolt 5 penetrating through the connecting pipe 3 and the mounting pipe 2 being screwed with the nut 6, meanwhile, in the screwing process of the bolt 5, the fixing plate 8 can support the side wall of the bolt 5 under the elastic effect of the torsion spring 9, so that the bolt 5 cannot be loosened after being screwed, when the bolt 5 needs to be disassembled and released, the fixing plate 8 is opened, so that the bolt 5 and the nut 6 can be unscrewed, the phenomenon that equipment is loosened in the long-term use process and influences are caused on the connection position is avoided, the stability of the device is effectively guaranteed, and the practicability of the device is stronger;

the top of the mounting pipe 2 is provided with a sealing groove 14, a sealing device is arranged on the inner side wall of the sealing groove 14, the sealing device comprises an extrusion groove 10 formed in the inner side wall of the mounting pipe 2, the extrusion groove 10 is communicated with the sealing groove 14, an extrusion block 11 is movably arranged on the inner side wall of the extrusion groove 10, a push rod 12 is fixedly arranged on the side wall of the extrusion block 11, a push block 13 is fixedly arranged at the end part of the push rod 12, the end part of the push block 13 is tightly abutted to the side wall of the bolt 5, a sealing block 17 is fixedly arranged at the end part of the connecting pipe 3, the sealing block 17 is positioned inside the sealing groove 14, a sealing gasket 16 is arranged on the inner side wall of the sealing groove 14, the tail part of the extrusion block 11 is tightly abutted to the side wall of the sealing gasket 16, an air bag 15 is fixedly arranged on the inner side wall of the sealing gasket 16, and the side wall of the sealing block 17 is tightly abutted to the side wall of the air bag 15;

when entering into the junction of installation pipe 2 through bolt 5, will push away ejector pad 13 to the inboard, when ejector pad 13 moves to the inboard, will make push rod 12 move to the inboard, and then will make push rod 12 promote extrusion block 11 to the inboard, make extrusion block 11 extrude gasbag 15 inside the seal groove 14, make gasbag 15 inflation, simultaneously sealed block 17 will enter into seal groove 14, sealed block 17 will fully extrude gasbag 15 to the inboard, and then make gasbag 15 support sealed 16 to the lateral wall of seal groove 14 tightly, it is better to ensure sealed effect, avoid the pipeline to take place to leak, cause harmful effects to equipment result in, effectively improve equipment stability.

In the utility model, the connecting pipe 3 and the mounting pipe 2 can be fixedly connected by screwing the bolt 5 through the connecting pipe 3 and the mounting pipe 2 and the nut 6, meanwhile, in the screwing process of the bolt 5, the fixing plate 8 can abut against the side wall of the bolt 5 under the elastic force effect of the torsion spring 9, so that the bolt 5 cannot be loosened after being screwed, when the disassembly is required to be released, the fixing plate 8 is opened, so that the bolt 5 and the nut 6 can be unscrewed, when the bolt 5 enters the connecting part of the mounting pipe 2, the push block 13 can be pressed inwards, when the push block 13 moves inwards, the push rod 12 can move inwards, and further the push rod 12 can push the extrusion block 11 inwards, so that the extrusion block 11 can extrude the air bag 15 in the sealing groove 14, so that the air bag 15 is expanded, meanwhile, the sealing block 17 can enter the sealing groove 14, and the sealing block 17 can sufficiently extrude the air bag 15 inwards, thereby causing the bladder 15 to urge the gasket 16 against the side wall of the seal groove 14.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A large-size air preheater mounting structure comprises a preheater (1) and is characterized in that, mounting pipes (2) are arranged on two sides of the preheater (1), a connecting pipe (3) is arranged on the side wall of each mounting pipe (2), a bolt (5) is arranged on the connecting pipe (3), a nut (4) is fixedly arranged at the top of the bolt (5), the bottom of the bolt (5) extends to the bottom of the mounting pipe (2), a nut (6) is arranged on the side wall of the bolt (5) at the bottom of the mounting pipe (2) in a threaded manner, the nut (6) is provided with a fixing mechanism, the top of the mounting pipe (2) is provided with a sealing groove (14), be provided with sealing device on the inside wall of seal groove (14), the end fixing of connecting pipe (3) is provided with sealed piece (17), sealed piece (17) are located the inside of seal groove (14).

2. A large-size air preheater mounting structure as claimed in claim 1, wherein the fixing mechanism comprises a rotating rod (7) movably arranged at the bottom of the nut (6), a fixing plate (8) is fixedly arranged on the outer side wall of the rotating rod (7), a torsion spring (9) is arranged on the outer side wall of the rotating rod (7), one side of the torsion spring (9) is fixedly connected with the nut (6), the other end of the torsion spring (9) abuts against the fixing plate (8), and the end of the fixing plate (8) abuts against the side wall of the bolt (5).

3. The large-size air preheater mounting structure according to claim 1, wherein the sealing device comprises an extrusion groove (10) formed in an inner side wall of the mounting pipe (2), the extrusion groove (10) is communicated with the sealing groove (14), an extrusion block (11) is movably arranged on the inner side wall of the extrusion groove (10), a push rod (12) is fixedly arranged on a side wall of the extrusion block (11), a push block (13) is fixedly arranged at an end of the push rod (12), and an end of the push block (13) abuts against a side wall of the bolt (5).

4. A large-size air preheater mounting structure as claimed in claim 3, wherein a sealing gasket (16) is arranged on the inner side wall of the sealing groove (14), an air bag (15) is fixedly arranged on the inner side wall of the sealing gasket (16), and the side wall of the sealing block (17) is abutted against the side wall of the air bag (15).

5. A large size air preheater mounting structure as claimed in claim 1, wherein the inner diameter of the nut (6) is larger than the outer diameter of the bolt (5), and the thread on the inner side wall of the nut (6) is matched with the thread on the outer side wall of the bolt (5).

6. A large size air preheater mounting structure as set forth in claim 4, wherein the rear portion of said pressing block (11) abuts against the side wall of said packing (16).